.selected {
    background-image: linear-gradient(45deg, rgba(0, 128, 0, 0.1) 25%, transparent 25%, transparent 50%, rgba(0, 128, 0, 0.1) 50%, rgba(0, 128, 0, 0.1) 75%, transparent 75%, transparent);
    background-size: 20px 20px;
}

body{
    overflow: hidden;
}